CONTRIBUTION A L'ETUDE DE LA DEGRADATION THERMIQUE DE COMPOSITES A BASE DE RESINE SILICONE PDF Download

Author: DOMINIQUE.. POUTIERS-MARTIN
Publisher:
ISBN:
Category :
Languages : fr
Pages :

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LES TRAVAUX PRESENTES DANS CETTE THESE SONT RELATIFS A LA THERMODEGRADATION, EN MILIEU NEUTRE OU OXYDANT, DE MATERIAUX COMPOSITES A MATRICE SILICONE RTV 630 POUVANT ETRE UTILISES COMME ISOLANTS THERMIQUES ABLATIFS. QUATRE CHARGES ONT ETE CHOISIES: POUDRE DE SIALON, POUDRE DE CARBURE DE SILICIUM, FIBRES DE CARBONE, FIBRES DE CARBURE DE SILICIUM. LA MATRICE SILICONE RTV 630 CONTIENT ELLE-MEME DE LA POUDRE DE QUARTZ. LA TENUE THERMIQUE DE LA MATRICE A D'ABORD ETE ETUDIEE, PUIS LE COMPORTEMENT THERMIQUE DES COMPOSITES FORMES A PARTIR DE LA MATRICE ASSOCIEE A UNE ET DEUX CHARGES. PLUSIEURS TECHNIQUES DE THERMODEGRADATION ET D'ANALYSE ONT ETE EMPLOYEES. LA PYROLYSE A ETE ETUDIEE PAR A.T.G. DEPUIS LA TEMPERATURE AMBIANTE JUSQU'A 2000#OC, L'OXYDATION JUSQU'A 1000#OC. LES THERMOGRAMMES OBTENUS SONT ANALYSES PAR C.P.G., LES RESIDUS OBSERVES ET ANALYSES. ENFIN, QUELQUES PROPRIETES PHYSIQUES ONT ETE MESUREES SUR LES RESIDUS DE LA PYROLYSE, PRESENTANT UN INTERET PARTICULIER DANS LE CADRE DE L'ISOLATION THERMIQUE

Author: North Atlantic Treaty Organization. Advisory Group for Aerospace Research and Development
Publisher:
ISBN: 9789283600046
Category : Aeronautics
Languages : en
Pages :

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Author: James E. Mark
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 430

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The contents have been divided into sections on physical states of polymers and characterization techniques. Chapters on physical states include discussions of the rubber elastic state, the glassy state, melts and concentrated solutions, the crystalline state, and the mesomorphic state. Characterization techniques described are molecular spectroscopy and scattering techniques.

Author: G.W.H. Höhne
Publisher: Springer Science & Business Media
ISBN: 366203302X
Category : Science
Languages : en
Pages : 233

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Differential Scanning Calorimetry (DSC) is a well established measuring method which is used on a large scale in different areas of research, development, and quality inspection and testing. Over a large temperature range, thermal effects can be quickly identified and the relevant temperature and the characteristic caloric values determined using substance quantities in the mg range. Measurement values obtained by DSC allow heat capacity, heat of transition, kinetic data, purity and glass transition to be determined. DSC curves serve to identify substances, to set up phase diagrams and to determine degrees of crystallinity. This book provides, for the first time, an overall description of the most impor tant applications of Differential Scanning Calorimetry. Prerequisites for reliable measurement results, optimum evaluation of the measurement curves and esti mation of the uncertainties of measurement are, however, the knowledge of the theoretical bases of DSC, a precise calibration of the calorimeter and the correct analysis of the measurement curve. The largest part of this book deals with these basic aspects: The theory of DSC is discussed for both heat flux and power compensated instruments; temperature calibration and caloric calibration are described on the basis of thermodynamic principles. Desmearing of the measurement curve in different ways is presented as a method for evaluating the curves of fast transitions.

Author: Roger L. DeKock
Publisher: University Science Books
ISBN: 9780935702613
Category : Chemical bonds
Languages : en
Pages : 516

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"Designed for use in inorganic, physical, and quantum chemistry courses, this textbook includes numerous questions and problems at the end of each chapter and an Appendix with answers to most of the problems."--

Author: Jean-Paul Kurtz
Publisher: Springer Science & Business Media
ISBN: 0306483173
Category : Technology & Engineering
Languages : en
Pages : 1520

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Book Description
I am pleased to present a work which marks a milestone in the history of public works and, more precisely, in that of permanent structures—a comprehensive dictionary of Civil Engineering terms. Since the beginning of time, Man has always tried to find a means to clear the obstacles which nature erected to displace him. With the first tree trunk thrown across a river, man sought to improve the crossing structure. After the invention of the wheel, and to satisfy his thirst for conquest (Roman ways), and comfort (aqueducts), man built bridges that became a preremptory necessity to move quickly. Thus, Man started to build wooden and masonry works. With the passing centuries, the builders became masters in the art of building masonry works. Then came the Industrial Revolution and the advent of the steel (1864), which was closely followed by the invention of the reinforced concrete (1855). The need for railways and improving the road network inspired great works of crossing such as viaducts and tunnels. The boom of the railway network and the development of the car required the construction of an increasing number of new structures. This phenomenon continues today with hundreds of structures built each year throughout the world.

Author: Marta Fernández-García
Publisher: MDPI
ISBN: 3038979627
Category : Technology & Engineering
Languages : en
Pages : 342

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This book collects the articles published in the Special Issue “Polymeric Materials: Surfaces, Interfaces and Bioapplications”. It shows the advances in polymeric materials, which have tremendous applications in agricultural films, food packaging, dental restoration, antimicrobial systems, and tissue engineering. These polymeric materials are presented as films, coatings, particles, fibers, hydrogels, or networks. The potential to modify and modulate their surfaces or their content by different techniques, such as click chemistry, ozonation, breath figures, wrinkle formation, or electrospray, are also explained, taking into account the relationship between the structure and properties in the final application. Moreover, new trends in the development of such materials are presented, using more environmental friendly and safe methods, which, at the same time, have a high impact on our society.

Author: Paul S Clegg
Publisher: Royal Society of Chemistry
ISBN: 1788015207
Category : Science
Languages : en
Pages : 266

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Book Description
Bicontinuous interfacially jammed emulsion gels, now commonly termed 'bijels', are a class of soft materials, in which interpenetrating, continuous domains of two immiscible fluids are maintained in a rigid arrangement by a jammed layer of colloidal particles at their interface. Such gels have unusual material properties that promise exciting applications across diverse fields from energy materials and catalysis, to food science. This is the first book on the subject and provides the reader with a fundamental introduction. Edited by a recognised authority on bijels, the reader will learn about the bijel and its formation. Bringing together current understanding, this book aims to bring the potential application of bijels to diverse materials challenges closer to fruition. This is a must-have resource for anyone working in soft matter and applied fields.

Author: Agnes Buka
Publisher: World Scientific
ISBN: 1848167997
Category : Science
Languages : en
Pages : 299

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The book intends to give a state-of-the-art overview of flexoelectricity, a linear physical coupling between mechanical (orientational) deformations and electric polarization, which is specific to systems with orientational order, such as liquid crystals. Chapters written by experts in the field shed light on theoretical as well as experimental aspects of research carried out since the discovery of flexoelectricity. Besides a common macroscopic (continuum) description the microscopic theory of flexoelectricity is also addressed. Electro-optic effects due to or modified by flexoelectricity as well as various (direct and indirect) measurement methods are discussed. Special emphasis is given to the role of flexoelectricity in pattern-forming instabilities. While the main focus of the book lies in flexoelectricity in nematic liquid crystals, peculiarities of other mesophases (bent-core systems, cholesterics, and smectics) are also reviewed. Flexoelectricity has relevance to biological (living) systems and can also offer possibilities for technical applications. The basics of these two interdisciplinary fields are also summarized.

Author: Mahmoud M. Reda Taha
Publisher: Springer
ISBN: 3319781758
Category : Technology & Engineering
Languages : en
Pages : 699

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This volume collects the proceedings from the International Congress of Polymers in Concrete 2018 (ICPIC), held under the theme “Polymers for Resilient and Sustainable Concrete Infrastructure.” ICPIC 2018 provides an opportunity for researchers and specialists working in the fields of polymers to exchange ideas and follow the latest progress in the use of polymers in concrete infrastructure. It also showcases the use of polymers and polymer concrete in sustainable and resilient development, and provides a platform for local and overseas suppliers, developers, manufacturers and contractors using polymers, polymer concrete and polymer composites in concrete structures to develop new business opportunities and follow the latest developments in the field. The International Congress of Polymers in Concrete is an international forum that has taken place every three years for the last 40 years with the objective of following progress in the field of polymers and their use in concrete and construction. Following 15 successful congresses held in London (1975), Austin (1978), Koriyama (1981), Darmstadt (1984), Brighton (1987), Shanghai (1990), Moscow (1992), Oostende (1995), Bologna (1998), Honolulu (2001), Berlin (2004), Chuncheon (2007), Funchal (2010), Shanghai (2013) and Singapore (2015), the 16th ICPIC will take place in Washington, DC, from April 29 to May 1st, 2018.